Unless otherwise stated, closures start at 9pm and finish at 5am. Traffic management may be in place before the advertised closure times for the mainline.NORTHERN MOTORWAY (SH1)Onewa Road southbound on-ramp, 10 AprilShelly Beach Road southbound off-ramp, 6-7 & 10 AprilCENTRAL MOTORWAY JUNCTION (CMJ)Fanshawe Street southbound off-ramp, 10 AprilSouthbound lanes between Fanshawe Street off-ramp and Greenlane on-ramp, 8-9 April (approx. 10:00pm to 5:00am)SH1 southbound to SH16 eastbound (Port) link, 8-9 April (approx. 10:00pm to 5:00am)SH1 southbound to SH16 westbound link, 8-9 April (approx. 10:00pm to 5:00am)SH16 eastbound to SH1 southbound link, 8-9 April (approx. 10:00pm to 5:00am)Hobson Street southbound on-ramp, 8-9 AprilSymonds Street southbound on-ramp, 8-9 AprilKhyber Pass Road southbound on-ramp, 8-9 AprilSt Marks Road southbound on-ramp, 8-9 AprilWestbound lanes between Stanley Street off-ramp and Wellesley Street East on-ramp, 8-9 April (approx. 10:00pm to 5:00am)Grafton Road southbound on-ramp, 8-9 AprilSH16 (Port) westbound to SH1 southbound link, 8-9 April (approx. 10:00pm to 5:00am)SOUTHERN MOTORWAY (SH1)Southbound lanes between Greenlane off-ramp and Ellerslie-Panmure Highway on-ramp, 10 April (approx. 10:30pm to 5:00am)Greenlane southbound on-ramp, 10 April (approx. 10:30pm to 5:00am)Tecoma Street southbound on-ramp, 10 April (approx. 10:30pm to 5:00am)Northbound lanes between Mt Wellington Highway off-ramp and Mt Wellington Highway on-ramp, 6-10 April (approx. 10:00pm to 5:00am)Southbound lanes between Papakura off-ramp and Drury/SH22 on-ramp, 6-8 AprilPapakura (Loop) southbound on-ramp, 6-8 AprilPapakura (Diamond) southbound on-ramp, 6-8 AprilNorthbound lanes between Drury/SH22 off-ramp and Papakura on-ramp, 6-7 AprilDrury/SH22 northbound on-ramp, 6-7 AprilNorthbound lanes between Ramarama off-ramp and Papakura on-ramp, 8 AprilDrury/SH22 northbound on-ramp, 8 AprilRamarama northbound on-ramp, 8 AprilDrury/SH22 southbound off-ramp, 10 AprilDrury/SH22 northbound on-ramp, 9-10 AprilDrury/SH22 northbound off-ramp, 9-10 AprilDragway Road northbound off-ramp, 10 AprilNORTHWESTERN MOTORWAY (SH16)Northbound lanes between Hobsonville Road off-ramp and Brigham Creek Roundabout, 7 April (approx. 9:30pm to 5:00am)SH16 northbound to SH18 eastbound link, 7 April (approx. 9:30pm to 5:00am)UPPER HARBOUR MOTORWAY (SH18)Westbound lanes between Greenhithe Road off-ramp and Tauhinu Road on-ramp, 6 AprilEastbound lanes between Tauhinu Road off-ramp and Greenhithe Road on-ramp, 6 April (approx. 9:30pm to 5:00am)Eastbound lanes between Brigham Creek Road off-ramp and Squadron Drive on-ramp, 6 April (approx. 9:30pm to 5:00am)Brigham Creek Road eastbound on-ramp, 6 April (approx. 9:30pm to 5:00am)Eastbound lanes between Hobsonville Road off-ramp and Squadron Drive on-ramp, 7 AprilBrigham Creek Road eastbound on-ramp, 7 AprilTrig Road eastbound on-ramp, 7 AprilHobsonville eastbound on-ramp, 7 AprilSH16 northbound to SH18 eastbound link, 7 AprilSOUTHWESTERN MOTORWAY (SH20)Northbound lanes between Cavendish Drive off-ramp and SH20A Kirkbride Road on-ramp, 6-10 April (approx. 10:00pm to 5:00am)SH20 northbound to SH20A southbound link, 6-10 April (approx. 10:00pm to 5:00am)Massey Road northbound on-ramp, 6-10 AprilPuhinui Road northbound on-ramp, 6-10 AprilCavendish Drive northbound on-ramp, 6-10 April